Window screen



- Dec. 25 ,1923. 1,4i8,899

- C. G. HALLBERG WINDOW SCREEN Filed March '28 1922 ATTORNEY.

Patented Dec. 25, 1923.

cam. e. HALLBEBG. or namrowoc, wrscousln.

WINDOW SCREEN.

Application filed March as, 1922. Serial a... 547,466.

To all whom it may concern:

Be it known thatI, CARL HALLBERG, a citizen of the United States, residing at Manitowoc, in the county. of Manitowoc and State of WVisconsin, have invented oertain new and useful Improvements in VVindow Screens, of which the following is a specification. i This invention relates to adjustable metal window screens, and has for one of its objects to improve the construction and increase the efliciency and utilityvof devices of this character. 1

Another object of the invention is to provide a device of thischaracterhaving proved means for securing the screen ma terial to the framemembers.

lVith these and other objects in view, the invention consists in certain novel features of construction as hereinaftershown: and described and then specifically pointed out in the claims, and in thedrawing illustrative of the preferred embodiment of the invention Figure 1 is a sideelevation of one of the improved screen frames.

Fig. 2 is an enlarged section on the line 2-2 of Fig. 1. i

Fig. 3 is an enlarged end view of the improved screen frames.

Fig. 1 is an enlarged detail perspective view of one corner ofone of the frame units, illustrating the construction, and the manner of uniting the members.

Fig. 5 is an enlarged transverse section:

on the line 55 of Fig. 4c.

Fig. 6 is a View similar to Fig. 5, illustrating a slight-'modification inthe trans,- verse form of the frame sections.

A window screen, in accordance :with this invention, is -constructed from a. sectional screen body formed of a pair of associated U-shaped frame sections telescopically connected together and. capable of being adjusted for the adaption thereof in connection with window frames of varying widths.

Each of the frame sections of the screen is constructed from sheet metalvand embodies a pair of sides and'an end member, each bent into L-shaped form transversely to provide webs 10, 11, disposed at right angles with respect to each other. The webs 10, are wider than the webs 11, and each of the latter is extended, as at 12, and the marginal portion of the extension is bent inwardly as at 13, to provide a guide rib.

PATENT OFFICE.

The inner marginal portion of each of the I webs 10, is folded upon itself to form a channel 14, for the reception of one edge of va foraminous sheet, as indicated at 15. After the foraminous sheetv 15,, has been positioned in the channels formed on the side and end member of a frame section, the material which provides one wallofthe channel is indented so as to extend in the foraminous sheetlfi, as indicated at 16, whereby the foraminous sheet 15, is secured to the frame sections.

members of the frame sections abut and have a mitered joint therebetween. The p folded marginal portion of the webslO of an end member is cutaway ateachend members terminate at pointsremoved from marginal portions of the webs 10, of the side the outer ends of said webs 10, but the outer 1 end of the said-folded marginal portion is arranged in close proximity to an end of a f folded marginal portion of an end member. 1

The webs 10, of the side members overher and are secured together by the -holdlap theends of the webs 10, of an end mem- 1 fast devices 17. Each frame member, at each corner thereof, is provided with L-shaped reinforcing or brace plates 19, which are angle shaped in contourand are fixedly secured in position by the hold-fast device 20, as clearly shown in Figure 1.

The free ends of the turned folded portions 14 are coupled by stay members 21 which are united thereto by rivetsl22, and with one edge of each stay turned inward form effectual stops to prevent the passage of flies and other insects.

The overturned portions 14 of the inner telescoping side members of the frame porthe folded portions 14 '05 v toward the adjacent foraminous sheet,as

ion

- fully collapsed.

A thumb lug 26 is attached to the, inner frame member, to'facilitate the operation of moving the screen longitudinally to remove,

them from or insert them in a window.

Formed in the web 11 of the outer frame member are slots 2'6 to receive holding Screws or the like toenable the screen frame fto be attached permanently to the window frame, if required.

The improved device is simple in construction, can be manufactured of any suitable material, and of any required size to adapt it to windows of varying widths.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it will be understood thatmodifi'cations within the scope of the claimed inventionmay be made in the construction w-ithout departing from the principle of the invention or sacrificing any of its advantages.

The frame sections are shown oblong transversely in Figs. 2, 4 and 5 which will be the form preferably employed for the longer or full length screens, while the form shown in Fig. 6-will preferably be employed forthe shorter or sash length screens.

Having thus described the invention, what is claimed as: new is:

1 A window scii'cencomprising a frame formed ofa pair of U-shaped telescopic sections, each consisting of an end member and; a pair of side members, each of said members formed of a pair of webs disposed at right angles with. respect to each other, one of said webs of each member having the free marginal portion thereof bent at right angles to provide an Lshaped guide rib of a length equal to the length of the web, and the other of the-webs of each member having the freemarginal portion thereof folded upon itself and cutaway to provide a channel of less length than the length of the web, a foraminous sheet extended into the channel of each of said frame sections,

a U-shaped stay member connected to, the side members of each frame section and registering with the channels of its respective side members and further having said sheet extending therein, the said folded marginal portions of each frame section and of each stay member having inherent means for securing said sheet to its respective frame section, and each of said stay members having one longitudinal side thereof disposed at right angles to abut against a sheet, said right angular portions of said stay members forming stops and further providing closures between said sheets.

2. A window screen comprising a frame formed of a pair of U-shaped telescopic sections, each consisting of an end member and a pair of side members, each of said members formed of a pair of webs disposed at right angles with respect to each other, one of said webs of each member having the free marginal portion thereof bent at right angles to provide an L-shaped guide rib of a length equal to the length of the web, and the other of the webs of each member hav ing the free marginal portion thereof folded upon itself and cutaway to provide a channel of less length than the length of the web, a foraminous sheet extended into the channel of each of said frame sections, a

U-shaped stay member connected to the side members of each frame section and regis- I tering with the channels of its respective side members and further having said'sheet extending therein, and said folded marginal portions of each frame section and of each stay member having inherent means for securing said sheet to its respective frame sec tion, and each of said stay members having one longitudinal side thereof disposed at right angles to abut against a sheet, said right angular portions of said stay members forming stops and further providing closures between said sheets, and. combined reinforcing and coupling plates of angle shape secured to the inner faces of each frame sec- 'tion at the corners thereof.

In testimony whereof, I afiix my signa- 

